/* ==========================================================================
   AnKEY Official Website - Shared Styles
   Version: 1.0
   ========================================================================== */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    --coral: #D96B60;
    --coral-light: #E8A099;
    --teal: #1B7B8C;
    --teal-dark: #145A66;
    --teal-light: #2D9BAD;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-800: #1F2937;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans TC', "Microsoft JhengHei", sans-serif;
    line-height: 1.7;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
    background: var(--white);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-bar {
    width: 4px;
    height: 36px;
    background: var(--coral);
    border-radius: 2px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--teal);
    letter-spacing: -0.5px;
}

.logo-text span {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

.nav ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.nav a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--teal);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: 8rem 2rem 4rem;
    background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 8px;
    height: 100%;
    background: var(--coral);
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 2rem;
    max-width: 600px;
}

/* Back Link (for detail pages) */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--white);
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

/* ==========================================================================
   Container
   ========================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* ==========================================================================
   Section
   ========================================================================== */
.section {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    margin-bottom: 2rem;
    border: 1px solid var(--gray-200);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--teal);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--coral);
    display: inline-block;
}

.section h3 {
    font-size: 1.25rem;
    color: var(--teal-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.section h3:first-of-type {
    margin-top: 0;
}

.section p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.section li {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.section li strong {
    color: var(--teal-dark);
}

/* ==========================================================================
   Highlight Box
   ========================================================================== */
.highlight-box {
    background: var(--gray-50);
    border-left: 4px solid var(--coral);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.highlight-box strong {
    color: var(--teal-dark);
}

.highlight {
    background-color: #FEF3C7;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
    color: var(--teal-dark);
}

/* ==========================================================================
   Stats Grid
   ========================================================================== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
    color: var(--white);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--coral);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ==========================================================================
   Feature Grid
   ========================================================================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.feature-card {
    background: var(--gray-50);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--coral);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.feature-card h4 {
    color: var(--teal-dark);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.feature-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.feature-card ul {
    margin-left: 1rem;
    margin-top: 0.5rem;
}

.feature-card li {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   Architecture Grid
   ========================================================================== */
.architecture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.arch-card {
    background: var(--gray-50);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--coral);
}

.arch-card h4 {
    color: var(--teal-dark);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.arch-card ul {
    margin-left: 1rem;
}

.arch-card li {
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.arch-card li strong {
    color: var(--teal-dark);
}

/* ==========================================================================
   Workflow
   ========================================================================== */
.workflow {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
    align-items: stretch;
}

.workflow-step {
    flex: 1;
    min-width: 120px;
    background: var(--gray-50);
    padding: 1.25rem 1rem;
    border-radius: 12px;
    text-align: center;
    position: relative;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
}

.workflow-step:hover {
    border-color: var(--teal);
    background: var(--white);
}

.workflow-step::after {
    content: "→";
    position: absolute;
    right: -0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    color: var(--coral);
    font-weight: bold;
    z-index: 1;
}

.workflow-step:last-child::after {
    content: "";
}

.workflow-step strong {
    display: block;
    color: var(--teal-dark);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.workflow-step p {
    color: var(--gray-600);
    font-size: 0.8rem;
    margin: 0;
}

/* ==========================================================================
   Tech Stack
   ========================================================================== */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.tech-item {
    background: var(--teal);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.tech-item:hover {
    background: var(--teal-dark);
    transform: translateY(-2px);
}

/* ==========================================================================
   Tables
   ========================================================================== */
.comparison-table,
.performance-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.comparison-table th,
.comparison-table td,
.performance-table th,
.performance-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.comparison-table th,
.performance-table th {
    background: var(--teal);
    color: var(--white);
    font-weight: 600;
}

.comparison-table tr:nth-child(even),
.performance-table tr:nth-child(even) {
    background-color: var(--gray-50);
}

.comparison-table tr:hover,
.performance-table tr:hover {
    background-color: var(--gray-100);
}

.comparison-table td,
.performance-table td {
    color: var(--gray-600);
}

.comparison-table td strong,
.performance-table td strong {
    color: var(--teal-dark);
}

.comparison-table tr.highlight-row {
    background-color: #ECFDF5;
}

.comparison-table tr.highlight-row:hover {
    background-color: #D1FAE5;
}

/* ==========================================================================
   Defect Grid (AOI specific)
   ========================================================================== */
.defect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.defect-type {
    background: var(--gray-50);
    padding: 1.25rem;
    border-radius: 10px;
    border-left: 4px solid var(--coral-light);
    transition: all 0.3s;
}

.defect-type:hover {
    border-left-color: var(--coral);
    background: var(--white);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.defect-type strong {
    color: var(--teal-dark);
    display: block;
    margin-bottom: 0.5rem;
}

.defect-type p {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: var(--teal-dark);
    color: var(--white);
    padding: 3rem 2rem;
    margin-top: 2rem;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-logo .logo-bar {
    background: var(--coral);
}

.footer-logo .logo-text {
    color: var(--white);
}

.footer-info {
    text-align: right;
}

.footer-info p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.footer-info .copyright {
    opacity: 0.7;
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1024px) {
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .comparison-table,
    .performance-table {
        font-size: 0.85rem;
    }

    .comparison-table th,
    .comparison-table td,
    .performance-table th,
    .performance-table td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .header-inner {
        flex-direction: column;
        gap: 1rem;
    }

    .nav ul {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: 7rem 1.5rem 3rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .container {
        padding: 2rem 1.5rem;
    }

    .section {
        padding: 1.5rem;
    }

    .stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2rem;
    }

    .workflow {
        flex-direction: column;
    }

    .workflow-step::after {
        content: "↓";
        right: auto;
        top: auto;
        bottom: -0.75rem;
        left: 50%;
        transform: translateX(-50%);
    }

    .comparison-table,
    .performance-table {
        display: block;
        overflow-x: auto;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }

    .footer-info {
        text-align: center;
    }
}